Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

John P Duffy, MD

Individual provider Transplant Surgery Physician · NPI 1548368111

John P Duffy, MD practises General Surgery in Oklahoma City, Oklahoma. Graduated from University of Oklahoma College of Medicine in 1999, 27 years ago. Practices with Zuhdi Transplant Physicians, a 50-clinician group and accepts Medicare assignment. Licensed in Oklahoma.

Years since qualifying
27
Trained at
University of Oklahoma College of Medicine
Licensed in
OK
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3300 NW Expy
Oklahoma City, OK 73112-4418
Phone: (405) 949-3349
Fax: (405) 945-5467
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Transplant Surgery Physician (primary) Taxonomy 204F00000X · Licence 27602 (OK)
Surgery Physician Taxonomy 208600000X · Licence 27602 (OK)

Record details

NPI number1548368111
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 20, 2006
Last updated in NPPESApril 5, 2017

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGENERAL SURGERY
Medical schoolUNIVERSITY OF OKLAHOMA COLLEGE OF MEDICINE
Graduated 1999 (27 years in practice)
Group practice Zuhdi Transplant Physicians — 50 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients72
Services billed 181 a service is one billed item, such as a visit, a test or a procedure
Average patient age67

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $223 11 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Zuhdi Transplant Physicians

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 50 clinicians in the practice; 12 are shown here.

Other providers in Oklahoma City